Does it really matter? I mean it will still be compatible with the original watch. And now that Apple has added the ability to pair multiple watches to the same device, and you clearly enjoy charging up the look with bands, why wouldn't you keep your original watch to swap out, even if you buy the next two models?
I think we all have to start thinking about the Watch less as a commodity in need of constant upgrade, and more as a watch you'll keep forever, in which case the 2nd gen models may or may not have new features or faster processors, but if they change enough to require different bands, then they will also have different styles. Think of it as buying a slim Movadao with only two hands for formal occasions, a Chronograph for sporting occasions when you might need the additional functionality, and another basic watch for daily wear with a second hand. You may have a whole new set of bands to swap out with the 2nd gen and 3rd gen watch as well, but it's all part of your horological collection. Maybe the 1st gen Watch is the one with the Hermes band.
The only reason this might not work for someone is because they actually need the functionality of later generation models, and would otherwise never swap it out for a watch without that new feature.
